Today, on these [internet tuning] lists, we tend to call negative systems "meantone" and positive systems "schismic". The reason 700 cents was chosen as the dividing line between "negative" and "positive" is that when the fifth is below 700 cents, the "meantone" (+4 fifths) approximation to the 5/4 is better than the "schismic" (-8 fifths) approximation to the 5/4. When the fifth is above 700 cents, the "schismic" approximation to the 5/4 is better than the "meantone" approximation to the 5/4. I might differ, saying that there is a "gray area", and also factoring the 6/5 into consideration . . . but the definitions are well-established and there is no reason to favor ones which could breed potential contradictions.

... Positive systems should be characterized by the fraction of a schisma that the fifths differ from just -- this is the relevant measure of them. Knowing what fraction of a syntonic comma a positive system's fifth might have been increased by is irrelevant for understanding the functioning of the system, and is potentially misleading.

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Manuel Op de Coul also suggested that I add the tuning's "p"-rating, where "p" represents the Pythagorean comma in terms of number of that temperament's scale degrees: